Nintendo already announced big numbers for the Switch today, and the NPD survey is backing them up.

All sales data quoted is for the United States, from November 4 - December 1.

Of the 8.7 million Switches sold in the US through December 1, more than 1.3m of them were sold in November alone. The Switch was the best selling system of November by revenue, though official numbers are not available to determine if the system also sold the most units. All three of the active consoles (Switch, Xbox One, PlayStation 4) all cleared 1.3m during the period, the first time all three of the active home consoles have ever reached this milestone. The Switch was said to have shown "significant growth" compared to the same period last year, offsetting losses by all other platforms (including the 3DS family).